Security Fixes and Rewards

Note: Access to bug details and links may be kept restricted until a majority of users are updated with a fix. We will also retain restrictions if the bug exists in a third party library that other projects similarly depend on, but haven’t yet fixed.

This update includes 33 security fixes. Below, we highlight fixes that were contributed by external researchers. Please see the Chrome Security Page for more information.

[$TBD][1136078] High CVE-2020-16018: Use after free in payments. Reported by Man Yue Mo of GitHub Security Lab on 2020-10-07

[$TBD][1139408] High CVE-2020-16019: Inappropriate implementation in filesystem. Reported by Rory McNamara on 2020-10-16

[$TBD][1139411] High CVE-2020-16020: Inappropriate implementation in cryptohome. Reported by Rory McNamara on 2020-10-16

[$TBD][1139414] High CVE-2020-16021: Race in ImageBurner. Reported by Rory McNamara on 2020-10-16

[$TBD][1145680] High CVE-2020-16022: Insufficient policy enforcement in networking. Reported by @SamyKamkar on 2020-11-04

[$TBD][1146673] High CVE-2020-16015: Insufficient data validation in WASM. Reported by Rong Jian and Leecraso of 360 Alpha Lab on 2020-11-07

[$TBD][1146675] High CVE-2020-16014: Use after free in PPAPI. Reported by Rong Jian and Leecraso of 360 Alpha Lab on 2020-11-07

[$TBD][1146761] High CVE-2020-16023: Use after free in WebCodecs. Reported by Brendon Tiszka and David Manouchehri supporting the @eff on 2020-11-07

[$NA][1147430] High CVE-2020-16024: Heap buffer overflow in UI. Reported by Sergei Glazunov of Google Project Zero on 2020-11-10

[$NA][1147431] High CVE-2020-16025: Heap buffer overflow in clipboard. Reported by Sergei Glazunov of Google Project Zero on 2020-11-10

[$7500][1139153] Medium CVE-2020-16026: Use after free in WebRTC. Reported by Jong-Gwon Kim (kkwon) on 2020-10-16

[$5000][1116444] Medium CVE-2020-16027: Insufficient policy enforcement in developer tools. Reported by David Erceg on 2020-08-14

[$5000][1138446] Medium CVE-2020-16028: Heap buffer overflow in WebRTC. Reported by asnine on 2020-10-14

[$3000][1134338] Medium CVE-2020-16029: Inappropriate implementation in PDFium. Reported by Anonymous on 2020-10-01

[$3000][1141350] Medium CVE-2020-16030: Insufficient data validation in Blink. Reported by Michał Bentkowski of Securitum on 2020-10-22

[$1000][945997] Medium CVE-2019-8075: Insufficient data validation in Flash. Reported by Nethanel Gelernter, Cyberpion (https://www.cyberpion.com) on 2019-03-26

[$500][1133183] Medium CVE-2020-16031: Incorrect security UI in tab preview. Reported by wester0x01(https://twitter.com/wester0x01) on 2020-09-29

[$500][1136714] Medium CVE-2020-16032: Incorrect security UI in sharing. Reported by wester0x01(https://twitter.com/wester0x01) on 2020-10-09

[$500][1143057] Medium CVE-2020-16033: Incorrect security UI in WebUSB. Reported by Khalil Zhani on 2020-10-28

[$TBD][1137362] Medium CVE-2020-16034: Inappropriate implementation in WebRTC. Reported by vvmute (Benjamin Petermaier) on 2020-10-12

[$TBD][1139409] Medium CVE-2020-16035: Insufficient data validation in cros-disks. Reported by Rory McNamara on 2020-10-16

[$5000][1088224] Low CVE-2020-16012: Side-channel information leakage in graphics. Reported by Aleksejs Popovs on 2020-05-30

[$500][830808] Low CVE-2020-16036: Inappropriate implementation in cookies. Reported by Jun Kokatsu (@shhnjk) on 2018-04-09

We would also like to thank all security researchers that worked with us during the development cycle to prevent security bugs from ever reaching the stable channel.

As usual, our ongoing internal security work was responsible for a wide range of fixes:

• [1149434] Various fixes from internal audits, fuzzing and other initiatives

Many of our security bugs are detected using AddressSanitizer, MemorySanitizer, UndefinedBehaviorSanitizer, Control Flow Integrity, libFuzzer, or AFL.

Lakshmana PamarthyGoogle Chrome